In this article, we will understand how to sort array list in an ascending order. A list is an ordered collection that allows us to store and access elements sequentially. It contains the index-based methods to insert, update, delete and search the elements. It can also have the duplicate elements.
Below is a demonstration of the same −
Suppose our input is −
Input list: [java, coding, is, fun]
The desired output would be −
The sorted list is: [coding, fun, is, java]
Algorithm
Step 1 - START Step 2 - Declare an ArrayList namely input_list. Step 3 - Define the values. Step 4 - Use the function Collections.sort() to sort the list. Step 5 - Display the result Step 6 - Stop
Example 1
Here, we bind all the operations together under the ‘main’ function.
import java.util.*; public class Demo { public static void main(String args[]){ ArrayList<String> input_list = new ArrayList<String>(); input_list.add("java"); input_list.add("coding"); input_list.add("is"); input_list.add("fun"); System.out.println("The list is defined as: " + input_list); Collections.sort(input_list); System.out.println("The sorted list is: " + input_list); } }
Output
The list is defined as: [java, coding, is, fun] The sorted list is: [coding, fun, is, java]
Example 2
Here, we encapsulate the operations into functions exhibiting object oriented programming.
import java.util.*; public class Demo { static void sort(ArrayList<String> input_list){ Collections.sort(input_list); System.out.println("The sorted list is: " + input_list); } public static void main(String args[]){ ArrayList<String> input_list = new ArrayList<String>(); input_list.add("java"); input_list.add("coding"); input_list.add("is"); input_list.add("fun"); System.out.println("The list is defined as: " + input_list); sort(input_list); } }
Output
The list is defined as: [java, coding, is, fun] The sorted list is: [coding, fun, is, java]